/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc.  Portions Copyrighted 2008 Richard Schilling.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 *
 * Contributor(s): Richard Schilling (coderroadie@gmail.com)
 *
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.mail.handlers;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import java.io.*;
import com.cognition.android.activation.datatransfer.DataFlavor;
import com.cognition.android.activation.*;
import javax.mail.internet.*;

/**
 * DataContentHandler for image/gif.
 */
public class image_gif implements DataContentHandler {

    private static ActivationDataFlavor myDF = new ActivationDataFlavor(Bitmap.class, "image/gif",
            "GIF Image");

    protected ActivationDataFlavor getDF() {
        return myDF;
    }

    /**
     * Return the DataFlavors for this <code>DataContentHandler</code>.
     * 
     * @return The DataFlavors
     */
    public DataFlavor[] getTransferDataFlavors() { // throws Exception;
        return new DataFlavor[] { getDF() };
    }

    /**
     * Return the Transfer Data of type DataFlavor from InputStream.
     * 
     * @param df The DataFlavor
     * @param ins The InputStream corresponding to the data
     * @return String object
     */
    public Object getTransferData(DataFlavor df, DataSource ds) throws IOException {
        // use myDF.equals to be sure to get ActivationDataFlavor.equals,
        // which properly ignores Content-Type parameters in comparison
        if (getDF().equals(df))
            return getContent(ds);
        else
            return null;
    }

    public Object getContent(DataSource ds) throws IOException {
        InputStream is = ds.getInputStream();
        // create an image out of the data stream
        Bitmap result = BitmapFactory.decodeStream(is);

        return result;
    }

    /**
     * Write the object to the output stream, using the specified MIME type.
     */
    public void writeTo(Object obj, String type, OutputStream os) throws IOException {
        if (!(obj instanceof Bitmap)) {
            throw new IOException("\"" + getDF().getMimeType()
                    + "\" DataContentHandler requires Bitmap object, "
                    + "was given object of type " + obj.getClass().toString());
        }

        Bitmap b = (Bitmap) obj;
        int width = b.getWidth();
        int height = b.getHeight();
        int[] data = new int[width * height];
        if (type.equalsIgnoreCase("image/gif")) {
            b.getPixels(data, 0, width, 0, 0, width, height);
        } else {
            throw new IOException(getDF().getMimeType() + " encoding not supported");
        }

    }
}
